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3 years ago

How do you find the Area of a pentagon

Mathematics

2 answers:

solmaris [256]3 years ago

8 0

Answer:

I think base times hight

Morgarella [4.7K]3 years ago

4 0

Answer:

Area of a regular pentagon = pa/2, where p = the perimeter and a = the apothem. If you don't know the perimeter, calculate it from the side length: p = 5s, where s is the side length.

Step-by-step explanation:

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Find the distance traveled by a particle with position (x, y) as t varies in the given time interval. x = 5 sin2 t, y = 5 cos2 t

rodikova [14]

$\begin{cases}x(t)=5\sin2t\\y(t)=5\cos2t\end{cases}\implies\begin{cases}\frac{\mathrm dx}{\mathrm dt}=10\cos2t\\\frac{\mathrm dy}{\mathrm dt}=-10\sin2t\end{cases}$

The distance traveled by the particle is given by the definite integral

$\displaystyle\int_C\mathrm dS=\int_0^{3\pi}\sqrt{\left(\frac{\mathrm dx}{\mathrm dt}\right)^2+\left(\frac{\mathrm dy}{\mathrm dt}\right)^2}\,\mathrm dt$

where $C$ is the path of the particle. The distance is then

$\displaystyle\int_0^{3\pi}\sqrt{100\cos^22t+100\sin^22t}\,\mathrm dt=10\int_0^{3\pi}\mathrm dt=30\pi$

6 0

3 years ago

The sum of 4 and the product of 5 and x is equal to 5 less than the product of 2 and x. What is the value of x?

Alexxandr [17]

Answer:

b. -3

Step-by-step explanation:

i hope this helps :)

7 0

3 years ago

63% of what number is 252

storchak [24]

Answer:

We have, 63% × x = 252

or,

63/100 × x = 252

Multiplying both sides by 100 and dividing both sides by 63,

we have

$x = 252 \times \frac{100}{63 }$

x = 400

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7 0

3 years ago

Given f(x)=-3x+2 , fine the domain value if the range value is -10

Nimfa-mama [501]

$-10=-3x+2\\
-3x=-12\\
x=4$

5 0

3 years ago

Use two unit multipliers to convert 56 centimeters to feet

krek1111 [17]

You would do 56 centimeters times 1 inch per 2.54 centimeters times 1 foot per 12 inches.

Mathematically, it will look like (56 * 1) / (2.54* 12) = approximately 1.837

In sentence form: There are approximately 1.837 feet in 56 centimeters.

6 0

3 years ago